To expand on Ohnana 's answer, yes this is possible.
If you were to create an application that essentially looked exactly the same as the bank's login screen, it could scrape the credentials and crash like they suggest. However, when you do that, and people start reviewing your app, it will be heavily rated on the bad (1-2 stars) side, which decreases exposure for your app.
I by no means encourage this type of app, but if you were to create an app like this, I'd think that the better way would be to:
Display login screen (and scrape entered details, maybe upon successful login [which you could test for]), then after scraping, pass the credentials to the server to actually sign in... It's an interesting thought, and trust me... I've thought to do this with some sites I have because they just redirect... but I'm sure it's not exactly a "nice" thing to do... let alone, illegal.